#1B189F#1B189F

#1B189F is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.5% C 0.202 H 269.8°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B189F
RGB	rgb(27, 24, 159)
HSL	hsl(241, 74%, 36%)
HSV	hsv(241, 85%, 62%)
CMYK	cmyk(83%, 84.9%, 0%, 37.6%)
CIE-LAB	lab(21.54, 48.13, -69.73)
CIE-LCH	lch(21.54, 84.72, 304.61°)
OKLab	oklab(34.48% -0.0007 -0.2018)
OKLCH	oklch(34.48% 0.202 269.8)
XYZ	xyz(7.0345, 3.3887, 33.0775)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B189F #9C9F18

analogous

#18589F #1B189F #5E189F

triadic

#1B189F #9F1B18 #189F1B

tetradic

#1B189F #9F1858 #9C9F18 #189F5E

square

#1B189F #9F1858 #9C9F18 #189F5E

split-complementary

#1B189F #9F5E18 #589F18

monochromatic

#090835 #12106A #1B189F #2420D4 #514DE4

Accessibility & contrast

On white

12.52

#1B189F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B189F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B189F

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B189F	#FFFFFF	#000000	##FFFFFF
##1B189F	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA3

Deuteranopia (green-blind)

#002C9D

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b189f;
/* rgb */ color: rgb(27, 24, 159);
/* oklch */ color: oklch(34.5% 0.202 269.8);

Tailwind

colors: {
  custom: {
    50: '#735abd',
    500: '#1b189f',
    950: '#000000',
  },
}

SCSS

$custom: #1b189f;
$custom-light: #735abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b189f",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 159
  },
  "hsl": {
    "h": 241.333,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34476,
    "c": 0.20182,
    "h": 269.8
  },
  "luminance": 0.03389
}

Semantic roles & 50–950 ramp

primary

#1B189F

secondary

#C3C64D

accent

#F037EC

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B189F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →